Diane Keaton says she regrets giving Al Pacino a marriage ultimatum during their romance in the 1980s, because the demand put an end to their relationship.

The "Annie Hall" star dated a string of Hollywood actors in her youth, including Warren Beatty and Woody Allen, but it was her "Godfather" co-star Pacino who really stole her heart.

She tells People magazine, "(Pacino was) charming, hilarious, a nonstop talker. There was an aspect of him that was like a lost orphan, like this kind of crazy idiot savant. And oh, gorgeous! I was mad for him. I worked hard on that one."

The relationship fell apart when she pushed for marriage and Keaton admits it wasn't her finest hour: "I went about it not in a perfect way."

The actress, who has never wed, admits she has never since come close to becoming a wife, but says now, at 65, she's glad she didn't become a stay-at-home mom like her mother.

She says, "There was a sacrifice she had to make in not having a career. I knew marriage was not going to be a friend to me."

And the actress is no longer even interested in looking for love.

The star, who has two adopted children, adds, "Dating terrifies me. Can you imagine anything worse...? My kids think the idea's repugnant, too."